To prove that the promise in Verse 9 is not theoretical, Krishna points to historical evidence. He states that in the past, 'many, many persons' (bahavo) have achieved this exact liberation. How did they do it? They completely eradicated attachment, fear, and anger (vīta-rāga-bhaya-krodhā). They became entirely absorbed in Me (man-mayā) and took absolute refuge in Me (mām upāśritāḥ). Through the fierce austerity of this knowledge, they were burned clean and purified (jñāna-tapasā pūtā). Having done this, they all attained My spiritual nature and supreme love (mad-bhāvam āgatāḥ).